<i>In situ</i>determination of the complex permittivity of ultrathin H<sub>2</sub>-infused palladium coatings for plasmonic fiber optic sensors in the near infrared

Zhang, Xuejun; Cai, Shunshuo; Liu, Fu; Chen, Hao; Yan, Peiguang; Yuan, Yong; Guo, Tuan; Albert, Jacques

doi:10.1039/c8tc01278d

Cited by 21 publications

(14 citation statements)

References 34 publications

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“…The standard deviation ( σ , measurement noise) of the cut‐off mode amplitude was estimated to 0.0074 dB (see Figure S5 , Supporting Information). Therefore, the theoretical LOD can be estimated in the user manner by using the experimental value equal to three times the standard deviation, [ 44 , 45 ] which corresponds to a concentration of 31 ppm.…”

Section: Resultsmentioning

confidence: 99%

Fast‐Response Oxygen Optical Fiber Sensor based on PEA₂SnI₄ Perovskite with Extremely Low Limit of Detection

Cai

Wang

et al. 2022

Advanced Science

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Oxygen sensor is an important technique in various applications including industrial process control, medical equipment, biological fabrication, etc. The reported optical fiber‐based configurations so far, using gas‐sensitive coating do not meet the stringent performance targets, such as fast response time and low limit of detection (LOD). Tin‐based halide perovskites are sensitive to oxygen with potential use for sensor applications. Here, the halide perovskite‐based oxygen optical fiber sensor by combining phenylethylammonium tin iodide (PEA2SnI4) and tilted fiber Bragg grating (TFBG) is demonstrated. The PEA2SnI4‐based oxygen optical fiber sensor is reversible at room temperature with a response time of about 10 s, and the experimental LOD approaches to an extremely low oxygen concentration of about 50 ppm. The as‐fabricated oxygen sensor shows a relative response change of 0.6 dB for an oxygen concentration increase from 50 ppm to 5% with good gas selection against NO2, CO, CO2, H2. This work extends the sensor applications of halide perovskites, providing a novel technique for rapid and repeatable oxygen gas detection at a low level.

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Section: Resultsmentioning

confidence: 99%

Fast‐Response Oxygen Optical Fiber Sensor based on PEA₂SnI₄ Perovskite with Extremely Low Limit of Detection

Cai

Wang

et al. 2022

Advanced Science

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“…Last but not least, true multidisciplinary efforts between photonics and bio- and electro-chemistry groups have led to impressive environmentally and clinically 38 , together with emerging renewable energy 39 – 42 , relevant applications for many substances that require detection and quantification. It is these efforts that are allowing the full potential of such optical fiber sensors to be reached and be able to exploit the extraordinary “Resolution + Specificity + Reproducibility” with fiber gratings and SPR in simple configurations and the combination of other advanced sensing technologies 43 – 45 .…”

Section: Discussionmentioning

confidence: 99%

Ultrasensitive detection of endocrine disruptors via superfine plasmonic spectral combs

et al. 2021

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The apparent increase in hormone-induced cancers and disorders of the reproductive tract has led to a growing demand for new technologies capable of detecting endocrine disruptors. However, a long-lasting challenge unaddressed is how to achieve ultrahigh sensitive, continuous, and in situ measurement with a portable device for in-field and remote environmental monitoring. Here we demonstrate a simple-to-implement plasmonic optical fiber biosensing platform to achieve an improved light–matter interaction and advanced surface chemistry for ultrasensitive detection of endocrine disruptors. Our platform is based on a gold-coated highly tilted fiber Bragg grating that excites high-density narrow cladding mode spectral combs that overlap with the broad absorption of the surface plasmon for high accuracy interrogation, hence enabling the ultrasensitive monitoring of refractive index changes at the fiber surface. Through the use of estrogen receptors as the model, we design an estradiol–streptavidin conjugate with the assistance of molecular dynamics, converting the specific recognition of environmental estrogens (EEs) by estrogen receptor into surface-based affinity bioassay for protein. The ultrasensitive platform with conjugate-induced amplification biosensing approach enables the subsequent detection for EEs down to 1.5 × 10−3 ng ml−1 estradiol equivalent concentration level, which is one order lower than the defined maximal E2 level in drinking water set by the Japanese government. The capability to detect EEs down to nanogram per liter level is the lowest limit of detection for any estrogen receptor-based detection reported thus far. Its compact size, flexible shape, and remote operation capability open the way for detecting other endocrine disruptors with ultrahigh sensitivity and in various hard-to-reach spaces, thereby having the potential to revolutionize environment and health monitoring.

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“…[ 14 ] Upon any change in the external medium permittivity, the narrow cladding resonances shift in wavelength and/or amplitude, resulting in large transmission level modifications within their spectral width. This high sensitivity to very small changes in the TFBG surrounding has been used previously to develop high performance sensors for biomedicine, [ 15,16 ] electrochemical and magnetic detection, [ 17,18 ] gas monitoring, [ 19,20 ] and renewable energy storage facilities. [ 21 ] Here, permittivity changes are due to evanescent field absorption by graphene to demonstrate a platform for light‐matter interaction with a simplified waveguiding structure, very low intrinsic loss, and ease of fabrication.…”

Section: Introductionmentioning

confidence: 99%

Saturable Absorption and Bistable Switching of Single Mode Fiber Core‐Guided Light by a 6 nm‐thick, Few Layers Graphene Coating on the Cladding Surface

Liu

Guo

et al. 2020

Annalen der Physik

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The coupling of less than 80 µW of in‐plane polarized near‐infrared light in a 6 nm‐thick graphene layer deposited on an optical fiber produces important permittivity changes leading to bistability and self‐starting 50% modulation of over 1 W of continuous wave light in the core. These features arise from resonant coupling of core‐guided light into the cladding by a 12‐degree tilted, 1 cm long fiber Bragg grating via narrowband, polarization‐dependent resonances that allow the selection of cladding modes with electric fields polarized in the plane of the graphene. The pulse repetition rate of the modulation increases from 10 to 269 Hz for input powers ranging from 0.3 to 1.33 W in the core, with no evidence of saturation. Investigations into the origin of these effects through physical modelling and different experimental conditions point to photo‐induced Joule heating in the graphene layer giving rise to temperature increases of the order of 60 °C and corresponding permittivity changes in the graphene and underlying silica fiber. Those changes lead to shifts in the resonance positions which result in the equivalent of saturable absorption for light guided in the core without direct contact with the absorbing graphene layer.

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In situdetermination of the complex permittivity of ultrathin H₂-infused palladium coatings for plasmonic fiber optic sensors in the near infrared

Abstract: In situ determination of the complex permittivity of H2-infused palladium using near infrared plasmons over optical fibers.

Cited by 21 publications

References 34 publications

Fast‐Response Oxygen Optical Fiber Sensor based on PEA₂SnI₄ Perovskite with Extremely Low Limit of Detection

Fast‐Response Oxygen Optical Fiber Sensor based on PEA₂SnI₄ Perovskite with Extremely Low Limit of Detection

Ultrasensitive detection of endocrine disruptors via superfine plasmonic spectral combs

Saturable Absorption and Bistable Switching of Single Mode Fiber Core‐Guided Light by a 6 nm‐thick, Few Layers Graphene Coating on the Cladding Surface

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In situdetermination of the complex permittivity of ultrathin H2-infused palladium coatings for plasmonic fiber optic sensors in the near infrared

Abstract: In situ determination of the complex permittivity of H2-infused palladium using near infrared plasmons over optical fibers.

Cited by 21 publications

References 34 publications

Fast‐Response Oxygen Optical Fiber Sensor based on PEA2SnI4 Perovskite with Extremely Low Limit of Detection

Fast‐Response Oxygen Optical Fiber Sensor based on PEA2SnI4 Perovskite with Extremely Low Limit of Detection

Ultrasensitive detection of endocrine disruptors via superfine plasmonic spectral combs

Saturable Absorption and Bistable Switching of Single Mode Fiber Core‐Guided Light by a 6 nm‐thick, Few Layers Graphene Coating on the Cladding Surface

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In situdetermination of the complex permittivity of ultrathin H₂-infused palladium coatings for plasmonic fiber optic sensors in the near infrared

Fast‐Response Oxygen Optical Fiber Sensor based on PEA₂SnI₄ Perovskite with Extremely Low Limit of Detection

Fast‐Response Oxygen Optical Fiber Sensor based on PEA₂SnI₄ Perovskite with Extremely Low Limit of Detection